Quarterly report pursuant to Section 13 or 15(d)

Equity-Based Compensation - Stock Options (Details)

v3.19.2
Equity-Based Compensation - Stock Options (Details) - Stock options - USD ($)
$ / shares in Units, $ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2019
Dec. 31, 2018
Stock options    
Outstanding at the beginning of the period (in shares) 579,617  
Options forfeited (in shares) (46,062)  
Outstanding at the end of the period (in shares) 533,555 579,617
Vested or expected to vest (in shares) 533,555  
Exercisable (in shares) 533,555  
Weighted average exercise price    
Outstanding at the beginning of the period (in dollars per share) $ 50.55  
Options forfeited (in dollars per share) 50.00  
Outstanding at the end of the period (in dollars per share) 50.60 $ 50.55
Vested or expected to vest (in dollars per share) 50.60  
Exercisable (in dollars per share) $ 50.60  
Weighted average remaining contractual life    
Outstanding 5 years 3 months 14 days 5 years 9 months 21 days
Vested or expected to vest 5 years 3 months 14 days  
Exercisable 5 years 3 months 14 days  
Additional disclosures    
Additional equity compensation to be recognized over the remaining period $ 0  
Maximum    
Stock-based compensation    
Contractual life 10 years